Buffing wheel



Mmh` 29, 1927. l 1,622,942 l E. A. CHASE BUFFING WHEEL Filed Jan. 17, 1923 Patented Mar. 29, 1927.

UNITED STATEL H i .g 1,622,942 PATEN T OFFICE.

nLRoY A. CHASE, or NORTHFIELD, VERMONT.

BUFFING 'WHEEL ApplicationV filed January 17, 1923. Serial llo. 613,262.

This invention relates to a bufling wheel particularly adapted for use in `b uiling or polishing granite and other similar materials.

It is the general object of my invention to provide a bulfing wheel of improved and simplified construction, which may be chea ly and easily manufactured and in whic the bufling material may be readily inserted and replaced. To the attainment of this object I provide a bufling wheel in which strips of felt or other material are arranged 'in circumferential series .in a succession of small bufling sections. I further provide improved devices for detachably securing each separate section of stripsA in position in the supporting plate.

My invention further relates to arrangements and combinations of parts which will be hereinafter' described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in which Fig. 1 is a partial plan view of a builing wheel embodying my improvements;

Figs. 2 and 3 are detail sectional elevations, taken along the lines 2 2 and 8-3 in Fig. 1, and

Figs. 4 and 5 are partial plan views show ing modified arrangements of the bufling sections.

My improved bufling wheel comprises a plate or disc 10 preferably having an inner flange or hub 11 which permits a center feed of the bufling material. A head 12 is provided for universal attachment to suitable driving mechanism. The head 12 is shown as connected with the flange 11 by arms 13 which are inclined `to feed the bufiing .material downward with a propellerlike action. The parts thus far described are commonly formed as a single iron casting.

It is sometimes desirable to secure a steel band 14 about the outer edge of the cast iron disc 10 for the purpose of safety, as these discs may be several feet in dia-meter and revolve vat a fairly high speed.

The disc or plate 10 vis provided with a series of vertical openings 16 extending through the plate and in which the strips 17 of felt or other bufling material are fitted. Each opening 16 preferably has one face 18 (Fig. @substantially perpendicular to the face of the plate 10 and the opposite face 19 inclined to receive a wedge 20 by which the strips 117 are retained in position in the openings 16. y

AW ith this construction, the Strips. 17 are very easily removed whenl worn and as easily replaced or vertically adjusted. They are secured firmly in position merely by driving in the wedge 20.

The particular arrangement and distribution of the openings 16 in the face of t-he plate 10 may be varied to suit different operating conditions, three arrangements thereof being indicated in the drawings.

In Fig. 1, the openings are arranged in a series .of circles concentric with the axis of the wheel. In Fig. 4, I have shown a spiral or scroll-like arrangement of the openings 16, and in Fig. 5, the openings are arranged in staggered or overlapping relation. The arrangements shown in Figs. 4 and 5 have the advantage that the wheel in rotating in one position covers the entire surface of the work beneath the wheel and does not leave rings of unpolished surface between the circles of bufling strips, as would be the case if the wheel shown in Fig. 1 were revolved about a fixed axis.

Under ordinary conditions, however, any

one of the three wheels is satisfactory, asl

the wheels are moved constantly over the surface o-f the work and do not revolve for any length of time about a fixed axis.

The arrangement of the strips in a succession of small sections in separate openings is advantageous on account of the greater convenience of separately securing each small section of strips and also because a small section of strips forms a more flexible unit 'as indicated in Fig. 3, and is adapted to yield readily to any inequalities or unevenness in the surface.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed. othern wise than as set forth in the claims, but what I do claim ist- 1. A bufling wheel comprising a plate having an extended series of short and substantially circumferential openings therein, a plurality of strips of flexible bufling ma terial fitted in each opening to form a single circumferentially extended bulling member, and separate means to secure each such assembly of strips in its opening, said openings being arranged in the face of the Wheel with successive openings radially overlapping.

2. A bulng Wheel comprising a plate having an extended series of short and substantially circumferential openings therein, a plurality of strips of flexible buliing material fitted in each opening to form a single circumferentially ext-ended buiiing member, and separate means to secure each such assembly of strips in its opening, said openings being arranged in a continuous spiral formation about the axis of the Wheel.

3. A butling Wheel comprising a plate having` an extended series ofshort and sub stantially circumferential openings therein,

each of said openings having an end Wall substantially perpendicular to the face of the plate and having the opposite side Wall inclined at an angle thereto, a plurality of strips of flexible buliing material itted in each opening, and a Wedge shaped block effective to hold said strips in said openings, said openings being arranged in the face of the Wheel With successive openings radially overlapping.

In testimony whereof I have hereunto axed my signature.

ELROY A. CHASE. 

